2026-03-12 20:23:15

idev/perf_file_io.sql

@@ -0,0 +1,67 @@
+-- +----------------------------------------------------------------------------+
+-- |                          Jeffrey M. Hunter                                 |
+-- |                      jhunter@idevelopment.info                             |
+-- |                         www.idevelopment.info                              |
+-- |----------------------------------------------------------------------------|
+-- |      Copyright (c) 1998-2011 Jeffrey M. Hunter. All rights reserved.       |
+-- |----------------------------------------------------------------------------|
+-- | DATABASE : Oracle                                                          |
+-- | FILE     : perf_file_io.sql                                                |
+-- | CLASS    : Tuning                                                          |
+-- | PURPOSE  : Reports on Read/Write datafile activity. This script was        |
+-- |            designed to work with Oracle8i or higher. It will include all   |
+-- |            tablespaces using any type of extent management as well as true |
+-- |            TEMPORARY tablespaces. (i.e. use of "tempfiles")                |
+-- | NOTE     : As with any code, ensure to test this script in a development   |
+-- |            environment before attempting to run it in production.          |
+-- +----------------------------------------------------------------------------+
+
+SET LINESIZE 145
+SET PAGESIZE 9999
+SET VERIFY   off
+
+COLUMN ts_name    FORMAT a15          HEAD 'Tablespace'
+COLUMN fname      FORMAT a45          HEAD 'File Name'
+COLUMN phyrds     FORMAT 999,999,999  HEAD 'Physical Reads'
+COLUMN phywrts    FORMAT 999,999,999  HEAD 'Physical Writes'
+COLUMN read_pct   FORMAT 999.99       HEAD 'Read Pct.'
+COLUMN write_pct  FORMAT 999.99       HEAD 'Write Pct.'
+
+BREAK ON report
+COMPUTE SUM OF phyrds     ON report
+COMPUTE SUM OF phywrts    ON report
+COMPUTE AVG OF read_pct   ON report
+COMPUTE AVG OF write_pct  ON report
+
+SELECT
+    df.tablespace_name                       ts_name
+  , df.file_name                             fname
+  , fs.phyrds                                phyrds
+  , (fs.phyrds * 100) / (fst.pr + tst.pr)    read_pct
+  , fs.phywrts                               phywrts
+  , (fs.phywrts * 100) / (fst.pw + tst.pw)   write_pct
+FROM
+    sys.dba_data_files df
+  , v$filestat         fs
+  , (select sum(f.phyrds) pr, sum(f.phywrts) pw from v$filestat f) fst
+  , (select sum(t.phyrds) pr, sum(t.phywrts) pw from v$tempstat t) tst
+WHERE
+    df.file_id = fs.file#
+UNION
+SELECT
+    tf.tablespace_name                     ts_name
+  , tf.file_name                           fname
+  , ts.phyrds                              phyrds
+  , (ts.phyrds * 100) / (fst.pr + tst.pr)  read_pct
+  , ts.phywrts                             phywrts
+  , (ts.phywrts * 100) / (fst.pw + tst.pw) write_pct
+FROM
+    sys.dba_temp_files  tf
+  , v$tempstat          ts
+  , (select sum(f.phyrds) pr, sum(f.phywrts) pw from v$filestat f) fst
+  , (select sum(t.phyrds) pr, sum(t.phywrts) pw from v$tempstat t) tst
+WHERE
+    tf.file_id = ts.file#
+ORDER BY phyrds DESC
+/
+